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The magnifying glass is good for making objects appear larger. Is the magnifying glass backwards? This is a counterintuitive behavior." The device attached to the streetlight measures the quantity of light, and turns on when it becomes dark. The more hours of daylight, the fewer hours it will be lighted. This is a causal relationship. The same as previously, the device measures the light, and turns on when it becomes dark. Neverless, when the device receives the light, it then turns it off. Upon shutting off, it detects that there is no light, and then turns on. The system stabilizes when it melts the lightbulb. This is a feedback loop."